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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <assert.h>
#include "asn1parser.h"
/*
* Construct a new empty reference.
*/
asn1p_ref_t *
asn1p_ref_new(int _lineno) {
asn1p_ref_t *ref;
ref = calloc(1, sizeof *ref);
if(ref) {
ref->_lineno = _lineno;
}
return ref;
}
void
asn1p_ref_free(asn1p_ref_t *ref) {
if(ref) {
if(ref->components) {
int i = ref->comp_count;
while(i--) {
if(ref->components[i].name)
free(ref->components[i].name);
ref->components[i].name = 0;
}
free(ref->components);
ref->components = 0;
}
free(ref);
}
}
static enum asn1p_ref_lex_type_e
asn1p_ref_name2lextype(char *name) {
enum asn1p_ref_lex_type_e lex_type;
int has_lowercase = 0;
if(*name == '&') {
if(name[1] >= 'A' && name[1] <= 'Z') {
lex_type = RLT_AmpUppercase;
} else {
lex_type = RLT_Amplowercase;
}
} else if(*name >= 'A' && *name <= 'Z') {
char *p;
for(p = name; *p; p++) {
if(*p >= 'a' && *p <= 'z') {
has_lowercase = 1;
break;
}
}
if(has_lowercase) {
lex_type = RLT_Uppercase;
} else {
lex_type = RLT_CAPITALS;
}
} else if(*name == '@') {
if(name[1] == '.')
lex_type = RLT_AtDotlowercase;
else
lex_type = RLT_Atlowercase;
} else {
lex_type = RLT_lowercase;
}
return lex_type;
}
int
asn1p_ref_add_component(asn1p_ref_t *ref, char *name, enum asn1p_ref_lex_type_e lex_type) {
if(!ref || !name
|| (int)lex_type < RLT_UNKNOWN || lex_type >= RLT_MAX) {
errno = EINVAL;
return -1;
}
if(ref->comp_count == ref->comp_size) {
int newsize = ref->comp_size?(ref->comp_size<<2):4;
void *p = realloc(ref->components,
newsize * sizeof(ref->components[0]));
if(p) {
ref->components = p;
ref->comp_size = newsize;
} else {
return -1;
}
}
if(lex_type == RLT_UNKNOWN) {
lex_type = asn1p_ref_name2lextype(name);
} else {
assert(lex_type == asn1p_ref_name2lextype(name));
}
ref->components[ref->comp_count].name = strdup(name);
ref->components[ref->comp_count].lex_type = lex_type;
if(ref->components[ref->comp_count].name) {
ref->comp_count++;
return 0;
} else {
return -1;
}
}
asn1p_ref_t *
asn1p_ref_clone(asn1p_ref_t *ref) {
asn1p_ref_t *newref;
newref = asn1p_ref_new(ref->_lineno);
if(newref) {
int i;
for(i = 0; i < ref->comp_count; i++) {
if(asn1p_ref_add_component(newref,
ref->components[i].name,
ref->components[i].lex_type
)) {
asn1p_ref_free(newref);
newref = NULL;
break;
}
}
}
return newref;
}
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